Specification2025 Mercury 300 FourStroke2025 Mercury 300 SeaPro
ManufacturerMercuryMercury
Model300 FourStroke300 SeaPro
Year20252025
Horsepower300 HP300 HP
Engine Type4-stroke4-stroke
Cylinders66
Displacement4,044 cc4,044 cc
Bore × Stroke96.0 × 93.2 mm96.6 × 92.0 mm
RPM Range5,500–6,200 RPM5,500–6,600 RPM
Fuel SystemEFIEFI
Fuel TypeRegularRegular
Weight305 kg (671 lbs)310 kg (684 lbs)
Starting SystemElectricElectric
SteeringRemoteRemote
Shaft LengthsXL/XXLXL/XXL
Gear Ratio1.73:11.73:1
Alternator59 A62 A
Trim & TiltPower Trim/TiltPower Trim/Tilt
Prop Output201.34 kW183.44 kW
Recommended Boat22–33 ft22–33 ft
MSRP$39,140$36,760
Better / Advantage Lower / Disadvantage Equal / Neutral

2025 Mercury 300 FourStroke vs 2025 Mercury 300 SeaPro — Which Is Better?

Choosing between the 2025 Mercury 300 FourStroke and the 2025 Mercury 300 SeaPro comes down to your specific boating needs and priorities.

The 2025 Mercury 300 FourStroke (2025) is a 300hp 4-stroke outboard from Mercury, weighing 305 kg (671 lbs). Its electronic fuel injection delivers reliable starts and improved fuel economy compared to carbureted alternatives. Power trim and tilt makes it easy to adjust on the water.

The 2025 Mercury 300 SeaPro offers 300hp with 4-stroke technology, tipping the scales at 310 kg (684 lbs).

At 305 kg (671 lbs), the 2025 Mercury 300 FourStroke is the lighter option — an important consideration for smaller boats, portability, and overall fuel efficiency.

Both motors are solid choices in the 300 HP class. Your final decision should factor in your boat size, typical use conditions, dealer availability in your area, and budget.